Colorado dirt roads, paper map. I have Trails Illustrated for many of the areas I ride, but there are holes in their coverage (west of Salida, for example). Recommendations for paper maps that show the details needed (Colorado Atlas book does not).
My most valuable source of maps is the Benchmark map book entitled "Colorado Road & Recreation Atlas". Benchmark's legend makes it easy to discern main gravel roads from "B" roads and paved roads. The scale is also the largest as compared to the Gazeteer series of map books. I can't recall where I purchased mine. They are also available via benchmarkmaps.com.
Thank you. I'll look into Benchmark's atlas and see if it shows what I need. I have a specific test area in mind to see if it shows the roads I know are there.